Ink sheet cartridge

Abstract

An ink sheet cartridge provided with a bobbin case easy to assemble and disassemble, formed with no protrusion on the outer surface thereof and capable of inhibiting the number of components from increase is obtained. This ink sheet cartridge is provided with a pawl and a receiving portion on upper and lower components respectively. The pawl is provided with a projecting engaging portion, and the receiving portion is provided with a groove engaging with the engaging portion. The groove has a guide for guiding the engaging portion and a stop portion fixing the engaging portion.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an ink sheet cartridge, and more particularly, it relates to an ink sheet cartridge mounted on a printer. [0003] 2. Description of the Background Art [0004] An ink sheet cartridge mounted on a printer is known in general. For example, Japanese Patent Laying-Open Nos. 9-136464 (1997), 6-246995 (1994), 9-323456 (1997) and 2005-47054 disclose such ink sheet cartridges. [0005] The aforementioned Japanese Patent Laying-Open No. 9-136464 discloses an ink ribbon cartridge (ink sheet cartridge) including a shell (bobbin case) having a spool storage portion rotatably storing a ribbon feed spool (feed bobbin) wound with an ink ribbon and a ribbon take-up spool (take-up bobbin) taking up a spent ink ribbon, in which the shell is constituted of a shell body having the spool storage portion and a lid while the lid is openable / closable with a hinge integrally formed on the shell body. In this ink ...

AI Technical Summary

Benefits of technology

[0021] The present invention has been proposed in order to solve the aforementioned problems, and an object of the present invention is to provide an ink sheet cartridge provided with a bobbin case easy to assemble and disassemble, formed with no protrusion on the outer surface thereof and capable of inhibiting the number of components from increase.

Problems solved by technology

Thus, it is difficult to disengage the pawls 102h from the receiving portions 103h, and the pawls 102h may disadvantageously be broken due to application of an excessive load when the same are forcibly bent outward to be disengaged from the receiving portions 102h.

Therefore, it is difficult to disassemble the bobbin case 101.

Therefore, the outer size of the ink ribbon cartridge is increased due to the protrusion, and components provided in a printer may disadvantageously come into contact with the protrusion.

Therefore, the outer size of the ink ribbon cartridge is increased due to the protrusion, and components provided in a printer may disadvantageously come into contact with the protrusion.

Further, the shell body and the lid separated from the shell body are combined with each other through the hinge, and hence it disadvantageously takes time for assembling the hinge.

The cassette case disclosed in the aforementioned Japanese Patent Laying-Open No. 9-323456 disadvantageously requires the two slidable fasteners for fixing the upper and lower cassettes to each other.

Therefore, the number of components is disadvantageously increased.

In the thermal transfer sheet cassette disclosed in the aforementioned Japanese Patent Laying-Open No. 2005-47054 constituted of the core holder and the two lid bodies, the number of components as well as the number of assembling steps are disadvantageously increased as compared with a case of covering the core holder with a single lid body.

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